Demon. Only rebuilt once in 5 years. Just needs tuning every 3 months. I’m hoping now I have it timed right that once I reject it we will be all good

I had a similar issue with the same carby. If it was tuned for WOT on the dyno, it drive like a pig putting around, but if it was tuned for daily driving, it performed like a pig under WOT. Could never find a happy medium.

Here are a couple more pics with the install tidied up. Had to start the learn again as I had the battery off for a while during this. No big deal. This can be avoided in future as you can download your tune to an SD card on the HHC & then also store it on your PC or laptop. I have worked out how to do this now ;D.

I put about another 30 miles on it & still really liking it. The plan is to let it 'finish' its learn then bring that tune into the PC & save it. Then on the PC I will experiment with different maps to try & lean cruise & implement decel fuel shut off & experiment with best hot start parameters.

Apart from the surge tank, with the air cleaner on you wouldn't know its there.

Looks good Andy.
Is there some type of inertia fuel cut off switch in this set up?

No, just a stall cut off. My now 'lift pump' also has the original unchanged stall protection. In short if the engine keeps running so do the pumps. Inertia switch sounds like a good added level of protection.

No, just a stall cut off. My now 'lift pump' also has the original unchanged stall protection. In short if the engine keeps running so do the pumps. Inertia switch sounds like a good added level of protection.

I think it is OEM on some factory EFI vehicles in case you get in an accident / collision the fuel flow stops.

A great safety cut out is an LPG cut out switch works off a tach or ignition lead signal, when you turn on the ignition it runs the pump for a few seconds, then when the engine fires up it turns the pump/s on.

LPG cut out works the same way as the inbuilt system in the Sniper ECU, it primes the system for a few second at key on, then needs a tach signal to keep the pump running. Engine stops, the pump stops.

OEM stuff probably has something built into the airbag deployment system that shuts down the fuel and ignition in an accident.

Easiest suggestion would be to go back to a mechanical pump, would think it would have more than enough to supply the surge tank.

Yeh but I am all set up for electric from the tank. Plus I can prime the surge tank after it has sat for a while or doin stuff. Haven't bought one yet but will get around to it, the noisy blue still works.

I use a Bosch tachometric relay for the tank pump cut out & the Sniper controls the injection pump.